SOLUTION: a business purchaseda new van for $27,500. after 5 years it's depreciated vaule is $12,000. assuming a straight line depreciation write an equation of the line giving the value V o

When X = 0 years, V = $27500
When X = 5 years, V = $12000

So we can use the usual letters for finding equations of lines,
let's use x for X and y for V:

When x = 0 years, y = $27500
When x = 5 years, y = $12000

So the problem becomes:

Find the equation of the line through the points 
(0,27500) and (5,12000)

Use the slope formula:





Now use the point-slope form:









Now change x back to X and y back to V:



Edwin